试论洞庭湖区土地利用时空演变特征
Journal: Agricultural Science DOI: 10.32629/as.v9i4.3906
Abstract
土地利用情况与全球气候危机之间存在密切关系。基于洞庭湖区四期(1990、2000、2010年和2020年)土地利用数据,采用土地利用转移矩阵、土地利用程度指数分析土地利用变化现状。结果表明：洞庭湖区内以林地为主,1990—2020年耕地面积持续减少,占比下降1.4%,林地面积占比减少0.27%,建设用地快速扩张,增加667km²。土地类型转移主要以耕地与林地之间相互转换为主,2010—2020年土地利用变化最为剧烈。30年间,土地利用综合指数增加0.0021,象征着该地区人类活动对土地的破坏程度相对较为平稳,但研究区土地利用程度总体不高,表示在对土地的开发方面还有很大的上升空间。
Keywords
土地利用变化；土地利用程度；洞庭湖区
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